<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <form name="form1">
        <h2>form1</h2>
        <p>
            decs
            <textarea name="desc">hello lili</textarea>
        </p>

    </form>
    <script>
        // document.form1.desc.value = 'jack'
        setTimeout(() => {
            console.log(document.form1.desc.value);
        }, 3000);


    </script>
</body>

</html>